How many pounds of sliced meat and cheese would you use on Party Trays to cater for 90 People?

I have an upcoming event and need to supply Sandwich Party Trays for 90 people. How many pounds of meat and how many pounds of cheese would you supply? I plan on using the usual Ham, Roast Beef and Turkey with associated cheeses..

Budget is very important. As Mimi pointed out the style of bread makes a difference. Also, will there be any thing else served? Salad, chips, dessert, beverages? Also will there be LTO? Time of day and the type of clientele eating makes a difference, ie.. A group of 90 retirees playing bridge in the afternoon will eat less than a group of 90 construction workers at lunch.

But it really boils down to what they are willing to pay. Ask some probing questions and make a professional recommendation, charge and supply accordingly.

Thank you for your reply's. I bake the bread myself and slice loafs that render 13-16 slices. The cheeses will be sliced as well. This is a Luncheon for service people - potato salad and broccoli salad along with deserts will be served. Usual cost is approx. $1500.00 per event. I just was not sure how many pounds of meat and cheeses to buy.